Registration code problems

I’m using Vista Ultimate and have been able to use PA2007 with some success.

I deleted my windows profile (changed the machine to another domain). Since it’s a clean user I have to enter the registration code again. It accept the code and ask me to restart PA2007, but PA2007 will remain unregistered.

The registration code is Ok since it worked before the profile was deleted. My user is non admin.

I also have problem that I have to enter the admin password everytime I open a archive.